Often I link stuff here I find while I'm at work, where I don't have the opportunity to vet whatever it is I've found. Just slap it in the new downloads section and hope whatever it is I found is at least decent or possibly even amazing.

Came back this way last night for a monster swap on a map I'm almost done with, figure it was a good time to test this flying horse... except when I opened it up turns out it's just the framework for the thing. It's not completed, it's listed as a download that hopefully someone will take the initiative and finish for the guy who's at the link.

Unless the reliable source was the author (.:.., or host (Hyper), they may not be so reliable.
Either Author or host would also have pointed out that the packs are for Unreal, not UT.
The packs are sourced from http://www.hypercoop.tk/indexd.htm in the "Mods and game types" section.

Well, Unreal was supposed to be more fantasy than Si-Fi. Later those fantasy themed monsters didn't fit any more.
It seems natural that Unreal development started fantasy like when you think about from which other company the Epic team originated.